Private Header Extensions to the Session Initiation Protocol for the 3GPP
RFC 7315, “Private Header Extensions to the Session Initiation Protocol for the 3GPP”, is an Informational document published in July 2014 by R. Jesske, K. Drage, C. Holmberg. It obsoletes RFC 3455. It has since been updated by RFC 7913, RFC 7976, RFC 9878. The canonical text is published by the RFC Editor.
Abstract
This document describes a set of private header (P-header) Session Initiation Protocol (SIP) fields used by the 3GPP, along with their applicability, which is limited to particular environments. The P-header fields are used for a variety of purposes within the networks that the partners implement, including charging and information about the networks a call traverses. This document obsoletes RFC 3455.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
The canonical text of RFC 7315 is hosted at rfc-editor.org. Available in TXT,HTML.
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